Adjustment mechanism for a drilling and/or stuffing machine



March 22, 1966 ZAHORANSKY ETAL 3,241,886

ADJUSTMENT MECHANISM FOR A DRILLING AND/0R STUFFING MACHINE 4 Sheecs-Sheet 1 Filed June 19, 1963 INVENTORS He/nz Zohorons/ry S/P fr/ed Thoma y March 1966 H. ZAHORANSKY ETAL 3,

ADJUSTMENT MECHANISM FOR A DRILLING AND/OR STUFFING MACHINE 4 Sheets-Sheet 2 Filed June 19, 1963 0 s W mmm Tm m AC mn mZ AC H ieazkm Mardl 1966 H. ZAHORANSKY ETAL 3,241,385

ADJUSTMENT MECHANISM FOR A DRILLING AND/OR STUFFING MACHINE 4 Sheets-Sheet 3 Filed June 19, 1963 Mardl 1966 H. ZAHORANSKY ETAL 3,

ADJUSTMENT MECHANISM FOR A DRILLING AND/OR STUFFING MACHINE 4 Sheets-Sheet 4 Filed June 19, 1963 mym m v w, m W C H y United States Patent 3,241,886 ADJUSTMENT MECHANISM FOR A DRILLING AND/0R STUFFKNG MACHINE Heinz Zahoranslty, Freiburg, Breisgau, and Siegfried Thoma, Todtnau, Black Forest, Germany, asslgnors to Anton Zahoransky, Todtnau, Black Forest, Germany,

a family corporation of Germany Filed June 19, 1963, Ser. No. 289,053 8 Claims. (Cl. 3003) This invention relates to drilling and stuffing machines for brushes, brooms and similar objects. More particularly it relates to an improved means for holding and moving brush bodies into position in front of such boring and filling devices, to which use, however, it is not restricted.

Drilling and stufiing machines generally have holding devices for articles to be worked upon arranged in groups of two or more for each drilling and stutfing mechanism. These devices are operated so that at any sequence of the machine one device clamps an article being processed while another unclarnps a processed article so that it can be manually removed and a new article inserted in its place.

The technique of manually placing and clamping articles in operative position on these machines is well known in the art. It is also known how to effect operations mechanically by means of a carriage connected to a special power drive. Special switching and transmission mechanisms, however, are required for this purpose. Such mechanisms are relatively expensive and subject to breakdown, particularly when the holding devices are mounted in inclined position. When thus inclined, it is necessary to substantially synchronize the movement of the control lever extension with that of the carriage in order to prevent excessive tilting of the holding devices. This situation arises because the articles cannot be effectively raised or removed from the holding devices by movement of the control lever when the former are in a tilted position. This is a considerable handicap and reduces the operating capacity of the machine.

Conventional switching mechanisms for synchronizing the extension and retraction of the control lever with the movement of the carriage are complicated, diflicult to regulate and subject to frequent breakdowns. A great need exists in the art, therefore, to create an improved adjustment mechanism for meeting the above stated requirements and overcome the present disadvantages and imperfections of such conventional means.

One of the main features of the invention, which addresses itself to solving this particular problem of boring and stufiing machines, is a separation of the propulsion mechanism which moves the carriage from the propulsion mechanism which regulates the extension or retraction of the lever which controls the tilting of the workpiece holders.

Another feature is a cylinder and piston device which serves as propulsion means for the movement of the carriage and/ or for the displacement of the control lever in a preferred embodiment of the invention.

Still another feature of the preferred embodiment is the insertion of a four-way controlling valve in the compression circuit which receives a pressure medium, diverts it to the left or right end of the double ended cylinders via regulation valves disposed before each intake and/ or outlet opening of each cylinder, and thereafter disposes of the depressurized fluid from either said left or right cylinder end.

A further important feature of the invention is that of impact plates for detachable mounting in adjustable positions to control the stroke of the lever piston rod. The lever extension rod is provided with a support flange or stop for a set of impact plates disposed on either side thereof and is connected to the lever by means of a glide or slide rod. The carriage piston propulsion rod also carries two impact plates adjustably fixed thereon. A flange for supporting the plates which also acts as a stop therefor, may be fixed to the machine frame.

This simplified means of readily adjusting the strokes of the pistons by positive, rigid plate members disposed exteriorly of the cylinders eliminates the difficulties formerly encountered when adjusting opposed resilient means enclosed within a spring housing.

Other features and advantages of the invention will be apparent in the following detail description and the accompanying drawings which illustrate preferred embodiments of the invention, wherein:

FIG. 1 is a side perspective view of the workpiece holder carriage mounted on a brush-making machine with one set of workholders in operative position showing connection means to the adjustment mechanism of FIG. 2 along the line 22;

FIG. 2 is a side perspective view, partly in section, of the adjustment mechanism after displacing the carriage in a lefthanded direction to position the workpiece holders as shown in FIG. 1, the connection thereto indicated along line 11;

FIG. 3 is a side elevation of the carriage shown in FIG. 1 with the other set of workholders in operative position showing the means of connection to the adjustment mechanism along line 44; and

FIG. 4 is a side elevation of the mechanism shown in FIG. 2 after displacing the carriage in a righthand direction to position the workholders in the alternate operative position as shown in FIG. 3, the connection thereto taken along line 3-3.

Since the invention is concerned with an improvement of certain known automatic boring and filling machines for brushes and brooms, only those parts of such known machines are illustrated which are necessary to an understanding of the invention. Therefore, some known parts of the machine are partly omitted or partly shown diagrammatically. For example, the device for boring with a periodic boring movement of the boring spindle is known, as is also the device for forming the brush bundles, wire staples and for driving the same into the brush bodies presented to it.

Referring to the drawings, the brush-boring and filling machine has a main frame 17 on which is fitted in known manner a boring tool 15 and a filling or stuffing tool 16. Opposite these tools is provided the device for holding the brush bodies to which the invention is applied. The frame 17 has a carrier arm 54 on which are mounted vertically movable guide rods 55. A carrier guide 56 in which a carriage 11 of the workholder device, indicated generally as 10, is transversely movable relative to the boring and filling devices, is mounted on said guide rods.

Two brackets 57 are mounted on the carriage 11 between which a frame 50 is swingably suspended about bolts 51. Brackets 57 and frame 50 have registering holes 58 so that the frame 50 can swing selectively about various axes of rotation to shorten or lengthen the deflection thereof. A smooth rod 53 which is slidably mounted in the apertured end of a lever 52 forms the lower side of the frame 50. This lever 52 in known manner controls the oscillating or swinging movement of the frame 50 in accordance with a control cam 65, see FIG. 2. The rod 53 can be positioned upwards or downwards on the frame 50. Pairs of workpiece holders 13 are pivotally mounted about bolts 12 through their shanks 59 to the opposite side of frame 50 from rod 53. At their free ends the shanks 59 are pivotally connected together by a rod 18 by bolts 19, so that the shanks will always be parallel to each other as all of their movements must be carried out in unison and uniformity. The shanks 59 are provided with several corresponding holes 60, so that the inclination of the bristle bundles to the brush bodies can be varied as required.

In order to be able to move the carriage 11 and the workpiece holders mounted thereon up and down, a lever 61 is coupled to a member 62 underneath the carriage 11, as at 63, which lever in known manner transmits the vertical movements to carriage 11 by means of a cam follower 66 riding along a cam track 65.

The control of the position of the workpiece holders in a transverse direction by means of a rod 21 and an adjusting mechanism indicated generally as 22 connected thereto, is effected by a lever 33, as shown in FIGS. 2 and 4. The adjusting mechanism 22 contains a piston 23 working within a cylinder 24, the latter being threadably mounted at one end with a cylindrical member 25 which is provided with internal threads 26 at its open end 27. The closed end of member 25 forms a support flange or stop 28 for a pair of impact plates 29a, 2911 which are detachably fixed at predetermined positions on piston rod 21 which slides to and fro through bore 28a to control the stroke of piston 23. Flange 28 may also be adjustably positioned on rod 21 by screwing member 25 further into or away from cylinder 24.

The rear end of cylinder 24 is mounted on glide or slide rod 30 having a pin 31 at its free end which rides in a slot 32 at one end of control lever 33. The lever is pivotally mounted as at 34 on an arm 35 extending from machine frame 17. A roller 36 attached to the other end of the lever follows a cam stencil disk 37 on switching wheel 38 which is driven by any conventional means to control synchronized time delayed movement of holders 13 when holes in the brush bodies 14 are being drilled and filled.

The propulsion of carriage 11 is effected by means of a second piston 39 working in a second cylinder 40 fixed to the frame 17 and arranged in parallel position to cylinder 24. Rod 41 carrying piston 39 is joined at its opposite end to a carriage displacement rod 42 by means of a guide or coupling 43. A flange 44 fixed to the frame 17 between cylinders 40 and coupling 43 supports rod 41 sliding to and fro within an internal bore 45. Two impact plates 39a, 39b are detachably mounted on either side of flange 44. These plates form stops to limit the stroke of piston 39 and corresponding longitudinal movement of carriage 11.

The pistons in both cylinders are activated by means of highly compressed air or other fluid such as oil alternately entering at both ends of the latter through inlet outlet pipes 46, 47. Pressure regulating valves 48a, 48b are positioned in both pipes proximate both cylinders to control the quantity of air or oil entering therein and/or leaving therefrom. Since cylinder 24 is movable in response to the force applied by rod 30 transmitted by lever 33 to regulate the position of the brush bodies 14 in workholders 13 during the drilling and. filling processes, the pipes 46a, 47a connecting this cylinder with valves 48b, are flexible.

In operation, brushes or brooms are bored and filled on a machine according to the invention in the following manner: After one brush body has been bored and another filled in known manner in each of the two workpiece holders 13a, 130, the machine will stop and. a magnet four-way valve 64 or similar means controlled by wheel 38 will immediately allow compressed air or liquid via one of the regulating valves 48a, 48b to flow through line 46 and enter to the left of the pistons 23 and 39 in cylinders 24, 40. Thus piston 39 as well as rod 41 are pressed to the right until plate 39a impacts against flange 44, see FIG. 4. The accurate displacement of carriage 11 with the workpiece holders 13a, 13b, 13c, 13d mounted thereon, is effected by means of this stroke movement limited by plate 39a, so that two of the brush bodies 14 are moved into their correct working positions under the 4 boring device 15 and filling device 16, respectively, as shown in FIG. 3.

When this is done, the inclination of the corresponding workpiece holders must be restored to the same angle at which they were previously positioned (and worked upon) before the displacement of the carriage 11 from its alternate position. This is only feasible if connection rod 18, together with rods 21 and 30 linked with it, is shortened by exactly the same distance carriage 11 was moved. The invention solves this problem by simultaneously admitting pressure means through valve 64 and line 46 via one of the valves 48b to the left of piston 23 in cylinder 24 as above stated. Thus piston 23, piston rod 21 as well as connection rod 18 by means of coupling 20, are pressed to the right until plate 29a abuts the support flange or stop 28, as shown in FIG. 4. In spite of the displacement of carriage 11 with the four workpiece holders pivotably mounted on swingably suspended frame 50 about bolts 51, the workpiece holders always keep the same position relative to tools 15 and 16 after each displacement as they had before.

A movement of the control lever 33 to the position shown in FIG. 4 where workholders 13a, at the left of each group, are in working position relative to the drilling and stufling tools, as shown in FIG. 3, also moves cylinder 24 because it is connected to it by rod 30. In this instance, the air or liquid column under high pressure situated in the left cylinder space transmits the control lever action on the piston-disk 23 and. thus the rods 21 and 18 are manipulated in a single operation to swing the four workholders from the first hole/ or bundle row position to that of the second row, etc.

When the displacement is completed, the automatic boring and filling machine is started again, preferably automatically by means of a switching device, not shown. The cam lever 33 controlled by continuously moving cam track 37 on wheel 38 moves the control rod 30 to and fro at the proper sequences.

The power of piston 23, located between control lever 30 and connection rod 18, must always be greater than the resistance it has to overcome. This is effected by increasing the diameter of piston 27 and the amount of fluid pressure applied against it in proportion to the force required to change the inclination of workpiece holders 13 linked to swingable frame 50, and to overcome the inertia and friction resisting the movement of connection rod 18.

The movements of rod 30 toward the right, regulated by flange 28 stopping plate 29a, are safely transmitted to rods 21 and 18, even though the rear right end of cylinder 24 is devoid of air or other pressure means at this time, since it is exhausted through one of the valves 48b into pipe 47 by the action of magnet valve 64. It is necessary to have sufficient pressure applied against piston 23 to push it to the right hand limit position shown in FIG. 4,

' in order to effect the required rigid transmission of the control movements from lever 33 through rod 30, which otherwise would not be possible.

While the machine is continuously running, drilling rows of holes in the brush body clamped in workpiece holder 13.) and filling the holes in the brush body in workpiece holder 13d, the worker will take the drilled brush body from 13a and place it in holder 13c and put an undrilled body 14 in 13a.

As soon as the last holes of a brush body have been bored and filled, respectively, the machine is again stopped by the switching device. At the same time, the magnet four-way valve 64, receiving an impulse from said switching device, allows compressed fluid into line 47 and one of the valves 48a. Said. fluid pressure will then enter into the cylinder 40 at the right of piston 39 and repress it as well as piston rod 41 to the left until the flanged disc 39b abuts the stationary flange 44 to effect the reverse displacement of the carriage 11 coupled to piston rod 41 by means of rod 42, see FIG. 2. Simultaneously, said fluid will also enter to the right of piston 23 in cylinder 24 and press it with piston rod 21 and rod 18 connected to it by coupling 20, to the left until the flanged disc 2% touches flange 28 and remains in this position. After displacing the carriage to the left, workpiece holder 13b will be underneath the boring spindle and workpiece holder 13d underneath the filling tool, whereas the other two holders 13a, 13c will be positioned to the left of these working tools, as shown in FIG. 1.

As is well known in the art, the workpiece holders are swingable in order that the brush bodies can be bored and filled in any desired manner, i.e., the holes or tufts 14a, respectively, are not upright, but have spreads which increase toward the exterior rows. The purpose of the displacement of carriage 11 on which the four workpiece holders are mounted, is merely to remove one of each pair of holders out of operating range of the boring spindle and the filling tool. Only in such arrangement is it possible to change the finished bored. and filled bodies 14 while the machine continues to run. This saves a con siderable amount of time as otherwise the machine would be inoperative for a comparatively long interval, being restarted only after the worker has changed the brush bodies completed in the previous working cycle. The drilling and filling machine of course comes to a standstill during each displacement of the carriage, but this is limited to a short period of about one to two seconds.

Also, as is well known, the workpiece holders 13 will not remain in a set inclined position during the operation of boring and filling, but the angle of inclination will practically change from one hole to the next. The change of the longitudinal position of the tufts is usually effected by lever 52 controlled by cam track 65 and linked to frame 50, which is swingable about bolts 51, by means of connection rod 53. The transverse positions of the tufts are effected by means of cam track 37 about the swingable lever 33 and rods 30, 2.1 and. 18, the latter of which is linked to the shanks 59 of the holders, pivoting about bolts 19.

When connection rod 18 is moved by the control system in a linear direction, the inclination of the holders will naturally change and correspondingly affect the inclinations of the hole to be bored and the tuft to be inserted. However, the change of the transverse inclination of the holders is gene-rally effected only from one row to the other. For example, if the body to be worked upon has seven longitudinal rows, there will be seven transverse inclinations of the holders to obtain seven different positions of bored holes in the bodies 14 clamped therein. As a rule, the center row of holes and/ or bristles is perpendicular to the center of the brush body. A worker soon discovers the best inclination of the holders for the easiest change of brush bodies.

A preferred conventional coupling 20 is shown in FIGS. 1 and 2 as a connecting guide between (1) rod 18, which is adapted to be moved longitudinally by piston rod 21, vertically with carriage 11 by lever 61, deflect workholders 13 about pivots 12 by lever 33 and swing up to 90 with frame 50 about bolts 51; and (2) fixedly connected piston rod 21.

Conventional coupling 43 is shown in FIGS. 1 and 2 as a connecting guide between: (1) rod 42, which is adapted to be moved longitudinally by piston 39 and vertically with carriage 11 by lever 61, and (2) fixedly connected piston rod 41.

It will also be obvious to one skilled in the art that the invention provides a much easier means to regulate the degree of movement of the carriage and/ or the workpiece holders by repositioning exteriorly disposed plates on their respective rods rather than to otherwise adjust the length of stroke of a piston within the interior of its cylinder.

The forms of the invention here described and illustrated are presented merely as examples of how the invention may be embodied and applied. Other forms, em bodiments, and applications of the invention, coming within the proper scope of the appended claims, will, of course, suggest themselves to those skilled in the art.

We claim:

1. In automatic brush making machines having a body portion, a drilling device, a stuffing device, a carriage, a frame pivotally mounted on said carriage, groups of article holders pivotally mounted on said frame, a first connecting rod attached to said carriage, a second connecting rod pivotally attached to said holders at one end thereof, a first and second coupling disposed on said first and second rods respectively, and control lever means for moving said holders, an article holder control mechanism comprising a first means for moving said carriage forwards and backwards to alternately place said holders into and out of operative location relative to said drilling and stufling devices, said first means comprising a first cylinder, a first piston working in said first cylinder, a first extended piston rod, said first coupling joining said first connecting rod to said first piston rod, and a second means for synchronizing the extension and retraction of said second rod with the movements of said first rod. to retain said holders in a predetermined inclined position relative to said devices, said second means comprising a second cylinder, a second. piston working in said second cylinder, a second extended piston rod, said second coupling joining said second connecting rod to said second piston rod.

2. In automatic brush making machines having a body portion, a drilling device, a stuifing device, a carriage, a frame pivotally mounted on said carriage, groups of article holders pivotally mounted on said frame, a first connecting rod attached to said carriage, a second connecting rod pivotally attached to said holders at one end thereof, a first and second coupling disposed on said first and second rods respectively, and control lever means for moving said holders, an article holder control mechanism comprising a first means for moving said carriage forwards and backwards to alternately place said holders into and out of operative location relative to said drilling and stufling devices, a second means for synchronizing the extension and retraction of said second rod with the movements of said first rod to retain said holders in a predetermined inclined position relative to said devices, said first and second means comprising a first and second cylinder with inlet and outlet openings, a piston working in each said cylinder, pipe means for conveying compressed fluid to and from said openings to activate said pistons for separate propulsion of said first and second rods, and regulating valves, one of said valves being placed in said pipe means before said inlet and said outlet openings of each said cylinder, said valves injecting and emitting said fluid to and from alternate sides of said pistons.

3. In automatic brush making machines having a body portion, a drilling device, a stuifing device, a carriage, a frame pivotally mounted on said carriage, groups of article holders pivotally mounted on said frame, a first connecting rod attached to said carriage, a second connecting rod pivotally attached to said holders at one end thereof, a first and second coupling disposed on said first and second rods respectively, and control lever means for moving said holders, an article holder control mechanism comprising a first means for moving said carriage forwards and backwards to alternately place said holders into and out of operative location relative to said drilling and stuffing devices, said first means comprising a first cylinder, a first piston Working in said first cylinder, a first extended piston rod, said first coupling joining said firist connecting rod to said first piston rod, a second means for synchronizing the extension and retraction of said second connecting rod 'with the movements of said first connecting rod to retain said holders in a predetermined inclined position relative to said devices, a flange mounted on said body portion, an internal bore disposed in said flange, said first piston rod slidably mounted through said bore, a first pair of impact plates disposed on either side of said flange, said flange forming a first limit stop for said plates, said plates being detachably mounted on said first piston rod to regulate the stroke thereof and thereby the degree of movement of said carriage.

4. In automatic brush making machines having a body portion, a drilling device, a stuffing device, a carriage, a frame pivotally mounted on said carriage, groups of article holders pivotally mounted on said frame, a first connecting rod attached to said carriage, a second connecting rod pivotally attached to said holders at one end thereof, a first and second coupling disposed on said first and second rods respectively, and control lever means for moving said holders, an article holder control mechanism comprising a first means for moving said carriage forwards and backwards to alternately place said holders into and out of operative location relative to said drilling and stuffing devices, a second means for synchronizing the extension and retraction of said second rod With the movements of said first rod to retain said holders in a predetermined inclined position relative to said devices, said first and second means comprising a first and second cylinder, pipe means for conveying compressed fluid to and from said openings to activate said pistons for separate propulsion of said first and second connecting rods, a second extended piston rod, said second coupling joining said second connecting rod to said second piston rod, slide means connecting one end of said second cylinder to said control lever means, said second cylinder being movable with said slide means and said second connecting rod, a second pair of impact plates detachably mounted on said second piston rod, and a second limit stop disposed intermediate said second pair of plates to regulate the stroke of said second piston rod and thereby the degree of extension and retraction of said holders.

5. A mechanism according to claim 4, including a cylindrical member having a closed end with a second internal bore therein, and an internally threaded open end, the opposite end of said second cylinder being threadably mounted within said open end, the closed end of said member forming said second limit stop and said second piston rod being supported by and extending through said second bore.

6. In automatic brush making machines having a body portion, a drilling device, a stufling device, a carriage, a frame pivotally mounted on said carriage, groups of article holders pivotally mounted on said frame, a first connecting rod attached to said carriage, a second connecting rod pivotally attached to said holders at one end thereof, a first and second coupling disposed on said first and second rods respectively, and control lever means for moving said holders, an article holder control mechanism comprising a first means for moving said carriage forwards and backwards to alternately place said holders into and out of operative location relative to said drilling and stuffing devices, a second means for synchronizing the extension and retraction of said second rod with the movements of said first rod to retain said holders in a predetermined inclined position relative to said devices, said first means comprising a first cylinder, a first piston working in said cylinder, a first piston rod, said first coupling joining said first connecting rod to said first piston rod, a first limit stop provided with an internal bore mounted on said body portion, said first piston rod supported by and extending through said bore, and a first pair of impact plates detachably mounted on said first piston rod on opposite sides of said first stop to regulate the stroke thereof and the degree of carriage displacement, said second means comprising a second cylinder, a second piston working therein, a second piston rod, said second coupling joining said second piston rod to said second connecting rod, a second limit stop, and a second pair of impact plates detachably mounted on said second piston rod on either side of said second stop to synchronize the stroke of said second piston with that of said first piston and maintain said holders in a predetermined inclination.

7. In automatic brush making machines having a body portion, a drilling device, a stuffing device, a carriage, a frame pivotally mounted on said carriage, groups of article holders pivotally mounted on said frame, a first connecting rod attached to said carriage, a second connecting rod pivotally attached to said holders at one end thereof, a first and second coupling disposed on said first and second rods respectively, and control lever means for moving said holders, an article holder control mechanism comprising a first means for moving said carriage forwards and backwards to alternately place said holders into and out of operative location relative to said drilling and stufiing devices, a second means for synchronizing the extension and retraction of said second rod with the movements of said first rod to retain said holders in a predetermined inclined position relative to said devices, said first and second means comprising a first and second cylinder with inlet and outlet openings, a piston working in each said cylinder, pipe means for conveying compressed fluid to and from said openings to activate said pistons for separate propulsion of said first and second rods, and regulating valves, one of said valves being placed in said pipe means before said inlet and said outlet openings of each said cylinder, wherein said pipe means comprises fixed and flexible elements thereof, said fixed elements connecting said valves to said first cylinder and said flexible elements connecting said valves to said second cylinder.

8. A control mechanism for synchronizing the movements of two related but independently operated members of an apparatus, a first of said members being fixedly secured to a first movable support, elements pivotally connecting the second member to a second movable support, said mechanism comprising two separate propulsion means, each said means provided with a cylinder, a piston having an extended piston rod working in each said cylinder, coupling means connecting each of said rods to each of said members, limit means disposed on said rods exterior to each said cylinder to adjustably regulate the stroke of each said piston, means for simultaneously ejecting and emitting fluid pressure to and from opposite ends of said cylinders and alternate sides of said pistons to synchronize the separate movements of said members, control lever means, one of said cylinders being connected to and disposed between said lever means and said second member, said elements remaining in operative position when said second member is moved in coordination with said first member, whereby alternative thrusts of said lever means in cooperation with said one cylinder are controllably transmitted to said elements.

References Cited by the Examiner FOREIGN PATENTS 702,569 1/1954 Great Britain. 748,305 4/1956 Great Britain. 839,555 6/1960 Great Britain.

GRANVILLE Y. CUSTER, JR., Primary Examiner.

D. D. SCHAPER, Assistant Examiner. 

1. IN AUTOMATIC BRUSH MAKING MACHINES HAVING A BODY PORTION, A DRILLING DEVICE, A STUFFING DEVICE, A CARRIAGE, A FRAME PIVOTALLY MOUNTED ON SAID CARRIAGE, GROUPS OF ARTICLE HOLDERS PIVOTALLY MOUNTED ON SAID FRAME, A FIRST CONNECTING ROD ATTACHED TO SAID CARRIAGE, A SECOND CONNECTING ROD PIVOTALLY ATTACHED TO SAID HOLDERS AT ONE END THEREOF, A FIRST AND SECOND COUPLING DISPOSED ON SAID FIRST AND SECOND RODS RESPECTIVELY, AND CONTROL LEVER MEANS FOR MOVING SAID HOLDERS, AN ARTICLE HOLDER CONTROL MECHANISM COMPRISING A FIRST MEANS FOR MOVING SAID CARRIAGE FORWARDS AND BACKWARDS TO ALTERNATELY PLACE SAID HOLDERS INTO AND OUT OF OPERATIVE LOCATION RELATIVE TO SAID DRILLING AND STUFFING DEVICES, SAID FIRST MEANS COMPRISING A FIRST 